Hi,
I perform a fit with two gaussians a and looking for a way to get the correlation coefficients.
I found in TMinuit “mnmatu(1)” which should print the variables but I have no idea how to call it…
I define my double gaussian:
Double_t MyGauss(Double_t *x,Double_t *par){gauss1(par1,2,3;x)+mygauss2(par1,3,4;x)}
and fit more or less like:
TF1 *MyFit = new TF1(“MyFit”,MyGauss,begin,end)
MyHisto->Fit(“MyFit”,“ERL”)
Where (&how) can I call mnmatu(1) or access the covariance matrix for my gaussians’ parameters?
Cheers,
Thomas